TWx Linux Repository
fec37500cf
During module load the punit might still be busy with its booting routines. During this time we try to communicate with it but we fail because we don't receive any feedback from it and we return immediately with a -EINVAL fatal error. At this point the driver load is "dramatically" aborted. The following error message notifies us about it. i915 0000:4d:00.0: drm_WARN_ON_ONCE(timeout_base_ms > 3) It would be enough to wait a little in order to give the punit the chance to come up bright and shiny, ready to interact with the driver. Wait up 10 seconds for the punit to settle and complete any outstanding transactions upon module load. If it still fails try again with a longer timeout, 180s, 3 minutes. If it still fails then return -EPROBE_DEFER, in order to give the punit a second chance. Even if these timers might look long, we should consider that the punit, depending on the platforms, might need long times to complete its routines. Besides we want to try anything possible to move forward before deciding to abort the driver's load. The issue has been reported in: https://gitlab.freedesktop.org/drm/intel/-/issues/7814 The changes in this patch are valid only and uniquely during boot. The common transactions with the punit during the driver's normal operation are not affected. Signed-off-by: Aravind Iddamsetty <aravind.iddamsetty@intel.com> Co-developed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230206183236.109908-1-andi.shyti@linux.intel.com |
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| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
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| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
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| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.